JPH0411104U - - Google Patents
Info
- Publication number
- JPH0411104U JPH0411104U JP5207490U JP5207490U JPH0411104U JP H0411104 U JPH0411104 U JP H0411104U JP 5207490 U JP5207490 U JP 5207490U JP 5207490 U JP5207490 U JP 5207490U JP H0411104 U JPH0411104 U JP H0411104U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- hydraulic
- control valve
- cylinder
- path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
Description
第１図はこの考案の一実施例に係る油圧回路た
るアクテイブサスペンシヨンシステムを示す回路
構成図、第２図は従来例としての油圧回路たるア
クテイブサスペンシヨンシステムを示す回路構成
図である。
符号の説明、Ｃ…油圧シリンダ、Ｃ１…油室、
１…油圧源、３…制御弁、４…タンク、５ａ…供
給路、６ａ…排出路、６ｃ…排出路側連通路、６
ｄ…オペレートチエツク弁、７…連通路、７ａ…
電磁比例リリーフ弁、９…パイロツト切換弁。
FIG. 1 is a circuit diagram showing an active suspension system as a hydraulic circuit according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing an active suspension system as a conventional hydraulic circuit. Explanation of symbols, C...Hydraulic cylinder, C1...Oil chamber,
DESCRIPTION OF SYMBOLS 1... Hydraulic source, 3... Control valve, 4... Tank, 5a... Supply path, 6a... Discharge path, 6c... Discharge path side communication path, 6
d...Operate check valve, 7...Communication path, 7a...
Electromagnetic proportional relief valve, 9...Pilot switching valve.
Claims (1)
ダの油室に供給して該油圧シリンダにおけるシリ
ンダ圧力を上昇させると共に上記油室からの油圧
を制御弁を介してタンクに排出して油圧シリンダ
におけるシリンダ圧力を低下させるように形成さ
れてなる油圧回路において、油圧源と制御弁とを
連通する供給路と、タンクと制御弁とを連通する
排出路と、を連通する連通路に供給路における油
圧を設定する電磁比例リリーフ弁を配設してなる
と共に、排出路に供給路における油圧をパイロツ
ト圧として作動して制御弁側からの油圧のタンク
側への排出を許容するオペレートチエツク弁を配
設してなり、かつ、制御弁と排出路を連通する排
出路側連通路に供給路における油圧をパイロツト
圧として作動して制御弁側からの油圧のタンク側
への排出を許容するパイロツト切換弁を配設して
なることを特徴とする油圧回路。 Hydraulic pressure from a hydraulic source is supplied to an oil chamber of a hydraulic cylinder via a control valve to increase cylinder pressure in the hydraulic cylinder, and hydraulic pressure from the oil chamber is discharged to a tank via a control valve to increase the cylinder pressure in the hydraulic cylinder. In a hydraulic circuit configured to reduce cylinder pressure, a supply path that communicates between a hydraulic source and a control valve, and a discharge path that communicates between a tank and a control valve are connected to a communication path that communicates with the hydraulic pressure in the supply path. In addition, an electromagnetic proportional relief valve is installed in the discharge path to operate the oil pressure in the supply path as pilot pressure, allowing the oil pressure from the control valve side to be discharged to the tank side. In addition, a pilot switching valve is arranged in the discharge passage side communication passage communicating the control valve and the discharge passage, which operates using the hydraulic pressure in the supply passage as pilot pressure and allows the hydraulic pressure from the control valve side to be discharged to the tank side. A hydraulic circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5207490U JPH0411104U (en) | 1990-05-18 | 1990-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5207490U JPH0411104U (en) | 1990-05-18 | 1990-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0411104U true JPH0411104U (en) | 1992-01-30 |
Family
ID=31572070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5207490U Pending JPH0411104U (en) | 1990-05-18 | 1990-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4894408U (en) * | 1972-02-15 | 1973-11-10 |
-
1990
- 1990-05-18 JP JP5207490U patent/JPH0411104U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4894408U (en) * | 1972-02-15 | 1973-11-10 |
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